// 生成订单号
exports.generateOrderNo = (prefix = '') => {
  const date = new Date();
  const year = date.getFullYear().toString().slice(2);
  const month = (date.getMonth() + 1).toString().padStart(2, '0');
  const day = date.getDate().toString().padStart(2, '0');
  const hour = date.getHours().toString().padStart(2, '0');
  const minute = date.getMinutes().toString().padStart(2, '0');
  const second = date.getSeconds().toString().padStart(2, '0');
  const random = Math.floor(Math.random() * 1000).toString().padStart(3, '0');
  return `${prefix}${year}${month}${day}${hour}${minute}${second}${random}`;
}; 